化学修饰啤酒酵母菌对铀的吸附特性OA北大核心CSCDCSTPCD
Adsorption characteristics of uranium by Saccharomyces cerevisiae by chemical modification
以甲醛为交联剂,将胱氨酸修饰到啤酒酵母菌(SC)上,并采用海藻酸钠和明胶固定化,得到一种新型的生物吸附剂——修饰啤酒酵母菌( MSC).通过红外光谱(IR)分别表征了两种吸附剂的结构,考察了其吸附铀的主要影响因素即溶液pH值、吸附时间等.结果表明:MSC细胞表面具有大量吸附铀的基团,MSC和SC吸附铀的最佳条件是:pH值为6.0,吸附时间分别为1.8、1.5h.对吸附动力学模型和吸附等温模型进行了分析,MSC和SC对铀的吸附动力学模型较好地符合了…查看全部>>
Modified Saccharomyces cerevisiae (MSC) was prepared from Saccharomyces cerevisiae (SO by cystine modification and formaldehyde as crosslinker, and was immobilized by alginate sodium and glut. FTIR was used to characterize MSC and SC, and the effects of Ph value and time on uranium adsorption over MSC and SC were investigated. It was found that there were many functional groups on the cell wall of MSC for adsorbing uranium. The optimal conditions for uranium…查看全部>>
彭国文;丁德馨;胡南;杨雨山;王晓亮
中南大学资源与安全工程学院,湖南长沙410083南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001南华大学化学化工学院,湖南衡阳421001南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
资源环境
修饰啤酒酵母化学修饰铀生物吸附动力学模型
modified Saccharomyces cerevisiaechemical modificationuraniumbiosorptionkinetics model
《化工学报》 2011 (11)
铀矿堆浸耦合动力学及其应用
3201-3206,6
国家自然科学基金项目(50774047,10975071)湖南省教育厅科研项目(10C1180)衡阳市科技局项目(2010ks32).
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